Disaster Recovery

Presentation by: Deep Shikha(08) Harkesh Bansal( 05 )

•NSE •NEED FOR DISASTER RECOVERY •BCP @ NSE •BACK UP SYSTEM

60-65% Share of equity market Average daily turnover of 8000 – 9000 crore 3,000 VSAT links, two VSAT hubs, and is linked to

around 1,000 leased lines.

NSE – A TYPICAL BUSINESS DAY

NSE and DR First disaster recovery site-Pune Went live in 1998 Nearness to Mumbai Second DR site –Chennai Different seismic zone Different political climate

What is disaster recovery? Disaster recovery is the process of regaining access to the data, hardware and software necessary to resume critical business operations after a natural or human induced disaster.

…the need Disease Earthquake Fire Flood Cyber attack Bribery Hurricane Utility outage Terrorism

… Biggest Risk THE BIGGEST SINGLE RISK TO BUSINESS

CONTINUITY IS THE LACK OF CONVICTION THAT A RISK ACTUALLY EXISTS

Current market Rapidly changing customer Data growth Regulatory issues Growing importance to access data

quickly by retaining it online An ever-shrinking time frame for backing up data, which is burdening conventional tape backup technologies

System Failure causing long term problems

Phases of BCP Analysis Solution design Implementation Testing and organization acceptance  Maintainence    

Preventions Against Data Loss Backups sent off-site in regular intervals Includes software as well as all data

information, to facilitate recovery Insurance copy on microfilm Storage area networks(SANs) Surge Protectors Uninterrupted power supply (UPS) Fire Preventions - more alarms, accessible extinguishers Anti-virus software

Connectivity

Corporate

network

Norms for switching over to DR H/W, S/W, environmental prob: spot

assessment, troubleshooting No staff: backup within same premises Switching to backup site Switching to DR site

What to replicate at the DR site?  First -

business critical applications must run without compromise  trading, clearing and settlement; surveillance, position monitoring, and risk management

 Second - Certain other applications operations will

continue to run, but may show less response time and performance levels.

 Third - certain applications will not be performed at all  Delivery deadlines for these applications, like software development and benchmark testing, may be extended

Applications for DR  3,000 VSAT links, owns two VSAT hubs,1000 leased lines  Primary site: 8 Stratus Fault-tolerant Mainframe Class

machines for critical, non-critical applications

 The DR site: only 3 such machines to replicate the critical

applications only

 Unix servers and the Oracle database are used for back

office activities at the primary site

 6 unix servers at DR site  Handle clearing and settlement applications

 Extranet server is hosted at primary site and mirrored at an

external ISP.

 Brokers can connect to the external ISP through alternate routes

via Internet in case of a disaster

SAN SAN is a defined architecture that sits between a file system and an underlying physical storage It is its own network, connecting all storage and all servers

What is a SAN? A SAN consists of a dedicated network that interconnects servers and their applications to storage resources with the use a switch or hub  Storage resources usually consists of disks and

tapes.

 The dedicated network is usually fibre channel

or SCSI

Statistics Cost of DR system: 40 crores

Daily turnover of 8000 -9000 crores